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Title: Population and pedigree studies reveal a lack of association between the dopamine D sub 2 receptor gene and alcoholism

Journal Article · · JAMA, Journal of the American Medical Association; (United States)
; ;  [1]; ;  [2]
  1. National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD (USA)
  2. Program Resources Inc., Frederick, MD (USA)

Using the dopamine D{sub 2} receptor clone {lambda}hD2G1, Blum et al recently found that the D{sub 2}/Taq 1 allele (A1) was present in 69{percent} of 35 deceased alcoholics but in only 20{percent} of an equal number of controls. To assess this association further, the authors evaluated the D{sub 2}/Taq 1 polymorphism and a single-strand conformation polymorphism detected by polymerase chain reaction and nondenaturing gel electrophoresis (PCR-SSCP) of the 3{prime} noncoding region of the D{sub 2} receptor gene. They studied 40 unrelated white alcoholics, 127 racially matched controls, and two white pedigrees. The Schedule for Affective Disorders and Schizophrenia-Lifetime Version (SADS-L) clinical diagnostic interviews were rated blindly by two clinicians. Alcoholics were subtyped according to age of onset, severity, presence of antisocial personality, and family history. No significant differences in either D{sub 2}/Taq 1 or PCR-SSCP allele frequencies were observed between alcoholics, subpopulations of alcoholics, or controls. The PCR-SSCP polymorphism provided independent information against linkage at the D{sub 2} receptor locus. This study does not support a widespread or consistent association between the D{sub 2} receptor gene and alcoholism.

OSTI ID:
5509534
Journal Information:
JAMA, Journal of the American Medical Association; (United States), Vol. 264:24; ISSN 0098-7484
Country of Publication:
United States
Language:
English